"In case they do not acquiesce with what the management proposes, they express their unhappiness by abstaining; all the while vocalisation their reservation," it said.
The report comes amid a tussle between some of Infosys founders, including N R Narayana Murthy, and the management over a range of issues like alleged corporate governance lapses at the firm, higher compensation paid to CEO Vishal Sikka and an expensive severance package extended to certain former executives.
Vishal Sikka, the first non-founder CEO of Infosys, resigned on August 18 from the company following months of acrimony with high-profile founders, led by N R Narayana Murthy, citing "malicious" and "personal attacks" on him.
While Sikka did not name Murthy for his exit, the board of the $10 billion firm blamed him for "continuous assault" through "factually inaccurate" and "already-disproved rumours" for the sudden resignation "despite strong board support".
Murthy, who left all board positions at Infosys before Sikka began his five-year term in August 2014, launched a counter-offensive saying that all he wanted as a shareholder was good governance and had neither questioned Sikka's work nor sought money or position for his children.
IiAS said the voting pattern of promoters' shares in resolutions presented by the company over the past 36 months is "unmistakable evidence" of an internal difference of opinion.
Not all founders vote on all resolutions suggesting that they are in not always in sync with each other, the investor advisory firm said.
"Therefore, one could well conclude that not all promoters share Narayana Murthy's concerns or even support his public criticism of the company and its board," it said.
According to IiAS, the voting over this 36-month period shows that even as the public debate over Sikka and the board's behaviour raged, another discussion was taking place, away from the bright lights.
(Except for the headline, this story has not been edited by NDTV staff and is published from a syndicated feed.)